The automatic transmission oil is synthetic and Jaguar claims it never needs changing. However, to prolong the transmission life our technicians strongly recommend changing the automatic transmission oil every 60,000 miles.

Use only Jaguar-approved fluid and carefully follow the Jaguar instructions for refilling the transmission.

On this V8 engine, timing chain problems are very common. Because the timing chain tensioners were made from plastic, they can fail prematurely and cause serious engine damage. A noticeable engine noise while idling or during a cold start can indicate a timing chain tensioner problem. The engine noise may also be accompanied by a rough or uneven engine idle. Improved components are available to remedy this problem.

The pair of wires appear to come from under the back seat into the boot, the red wire is attached to the positive terminal on the battery, however the black wire is not connected, it has a male connector on the end, just laid along the front of the battery and just beyond.
Anybody assist it this...

I bought a 1999 XJR with 115k miles on it but it has all the engine upgrades for the timing problems, I also replaced trans, rear end, and supercharger fluids, the car runs and rides fantastic. Only issue was a failed fuel pump, I found a good price on ebay and replaced both (there are 2 in the tank), was thinking of
replacing the oxy sensors but the are expensive and from what I've read almos...